Chemical Reactions and Properties of Acids and Bases
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Questions and Answers

What is the color of phenolphthalein in a base?

  • Blue
  • Clear
  • Red
  • Pink (correct)
  • All bases contain hydrogen ions.

    False (B)

    What are antacids used for?

    To relieve excess stomach acid or indigestion.

    Acids typically have a pH range of _____ to 6.9.

    <p>0</p> Signup and view all the answers

    Match the indicators with their color in acid:

    <p>Red litmus = Blue Blue litmus = Red Bromothymol blue = Yellow Methyl orange = Orange</p> Signup and view all the answers

    Which of the following is a chemical property?

    <p>Carbon dioxide formation from carbon and oxygen (D)</p> Signup and view all the answers

    Steel wool rusting is an example of a physical change.

    <p>False (B)</p> Signup and view all the answers

    What is the physical property of a substance if it is described as 'soluble in alcohol'?

    <p>solubility</p> Signup and view all the answers

    To test for the presence of ________, you can use a glowing match to see if it reignites.

    <p>oxygen</p> Signup and view all the answers

    Match the gas with the appropriate test:

    <p>Hydrogen = Listen for a pop noise Carbon Dioxide = Turns lime water cloudy Oxygen = Glowing match reignites Water vapor = Turns cobalt chloride paper pink</p> Signup and view all the answers

    What is the product of the reaction between Magnesium and hydrogen chloride?

    <p>Hydrogen gas (C)</p> Signup and view all the answers

    Acids have a pH greater than 7.

    <p>False (B)</p> Signup and view all the answers

    What is the general formula for a synthesis reaction?

    <p>A + B → AB</p> Signup and view all the answers

    Bases feel ______ to the touch.

    <p>slippery</p> Signup and view all the answers

    Match the following types of reactions with their definitions:

    <p>Synthesis = A + B → AB Decomposition = AB → A + B Combustion = $C_{a}H_{y} + O_{2} → CO_{2} + H_{2}O$ Single Displacement = A + BC → AC + B</p> Signup and view all the answers

    Which group do the noble gases belong to?

    <p>Group VIIIA (D)</p> Signup and view all the answers

    Beryllium and Fluorine react to form a covalent compound.

    <p>False (B)</p> Signup and view all the answers

    Name one diatomic element.

    <p>Hydrogen</p> Signup and view all the answers

    The formula for Calcium chloride is ______.

    <p>CaCl₂</p> Signup and view all the answers

    Match the ion with its isoelectronic species:

    <p>Arsenide ion ($As^{3-}$) = Krypton (Kr) Fluoride ion ($F^{-}$) = Neon (Ne) Boron ion ($B^{3+}$) = Helium (He) Sodium ion ($Na^{+}$) = Neon (Ne)</p> Signup and view all the answers

    What is the chemical formula for Silver carbonate?

    <p>Ag₂CO₃ (B)</p> Signup and view all the answers

    Fluorine is a metal.

    <p>False (B)</p> Signup and view all the answers

    What type of compound do alkaline earth metals typically form with halogens?

    <p>Ionic compound</p> Signup and view all the answers

    Study Notes

    Chemical Reactions

    • In an experiment, 2.4g of magnesium reacts with 78g of hydrochloric acid. 
    • To prove the law, in §54, only if gas was collected and its mass determined.
    • Gas produced: Hydrogen gas.
    • How much? 2.4÷24 = 0.1g, 7.8÷36.5 = 0.2g, Hydrogen 335

    Types of Reactions

    • Synthesis: A + B → AB
    • Decomposition: AB → A + B
    • Combustion: CxHy + O2 → CO2 + H2O
    • Single Displacement: A + BC → AC + B
    • Double Displacement: AB + CD → AD + CB

    Acids and Bases

    Acids

    • Sours
    • Dissolves in water
    • Reactive and corrosive
    • Good electricity
    • Metals to form hydrogen
    • Litmus paper red
    • pH < 7

    Bases

    • Bitter tasting
    • Feels slippery
    • Good electricity
    • Neutralizes acid
    • Litmus paper blue
    • pH > 7

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    Description

    Test your knowledge on chemical reactions, including synthesis, decomposition, and more. Explore the properties of acids and bases, their characteristics, and how they interact. This quiz covers essential concepts from chemistry, focusing on reaction types and the behavior of acids and bases.

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